if user_id
is an autoincrement field and 140
and 8
are two different group_id
:
insert into urzk_user_usergroup_map( `user_id`, `group_id` ) VALUES (NULL, '140'), (NULL, '8')
or if 140
is the user_id
and 8
the group_id
insert into urzk_user_usergroup_map( `user_id`, `group_id` ) VALUES ('140', '8')